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Broadband Circuit Transmission Line Modeling in  Spectre (Read 63 times)
repah
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Broadband Circuit Transmission Line Modeling in  Spectre
Sep 09th, 2018, 6:39pm
 
Hello,

I am designing broadband circuits in Cadence Virtuoso/Spectre and modeling the transmission lines in an EM solver and importing the S Parameters.

My circuits are broadband over - say 0-40 GHz.

My question - can I use the S Parameters from the EM solver (touchstone) using an n port in Virtuoso/Spectre and run transient analysis in Cadence Virtuoso/Spectre to see - say eye diagrams ?

What issues will I face ?  Can I use the n port for transient analysis ?

Thank you.
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deba
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Re: Broadband Circuit Transmission Line Modeling in  Spectre
Reply #1 - Sep 14th, 2018, 6:26am
 
Hi,

Yes you can use n-port for transient analysis. Look out for interpolation methods, rational order etc. Last I heard there is a new method called BBSPICE(broad band spice) available for interpolation.
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Frank Wiedmann
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Re: Broadband Circuit Transmission Line Modeling in  Spectre
Reply #2 - Yesterday at 2:27am
 
Take a look at https://support.cadence.com/wps/mypoc/cos?uri=deeplinkmin:ViewSolution;solutionN.... In most cases, the BBSPICE method works best.
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